import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-yvgao',
  templateUrl: './yvgao.component.html',
  styleUrls: ['./yvgao.component.css']
})
export class YvgaoComponent implements OnInit {

  constructor() { }

  ngOnInit() {
  };
  gotoback(){
     history.go(-1);
  }

}
